Two-dimensional domain structures in Lithium Niobate via domain inversion with ultrafast light

X. Chen, P. Karpinski, V. Shvedov, B. Wang, J. Trull, C. Cojocaru, A. Boes, A. Mitchell, Wieslaw Krolikowski, Y. Sheng

Abstract


Periodic inversion of ferroelectric domains is realized in a lithium niobate crystal by focused femtosecond near-infrared laser beam. One and two-dimensional domain patterns are fabricated. Quasi-phase matched frequency doubling of 815nm light is demonstrated in a channel waveguide with inscribed periodic domain pattern with conversion efficiency as high as 17.45%.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
Published in cooperation with SPIE

ISSN: 2080-2242